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NATHAN J. MITCHELL, or PHILADEL HIA, PENNSYLVANIA, ASSIGNOR or ONE-HALFTO NATHAN M. LEATHERS, OllSAME PLACE.

P INT,

SPECIFICATION forming part of Letters Patent No. 444,842, dated January20, 1891.

Application filed October 25,1890. Serial Ho. (9,364. (N0 specimens.)

To all whom it may concern:

Be it known that I, N ATLIAN J MIToHELL,

a citizen of the United fitatesresidine at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented a i new anduseful Paint, of which the, following water andimoisture.

is a specification.

My invention consists in an improvement in paints, beingdesigned for useon shingle,

board, felt, tin, and iron roots, as well as the iron work ot' bridges,fences, (he.

Among the objects in view are to provide a paint that'on tin and ironroofs will remain thereby preventing decay by saturation of When thepaint is applied in a heated condition, it expands .the pores of thematerial and causes a complete penetration, which will last for a greatnu mher of years, thus preserving the material that much longer thanwithout paint.

shingles at the ends exposed, which prevents moisture from drawingu'punder the shingle and causing decay. On paper or felt roots the paintalso penetrates the material and prevents it fro n1 cracking ordecaying, besides rendering it fireproof.

With these' enera1 and specific objects in view my paint eo'nsis ts" ofthe following" in-' gredients'namely, coal-tar, yellow ocher, on

pound;

(11116 paint when applied also penetrates under'th-c oxideof iron, or asuitalile filler, pluinbago, lime, salt, and coztl-oil-which are mixedtoget-her in the following: proportions: Coal-tar, one gallon; yellowoeher, oxide oij iron, or a suitable filler/two poundsg plumbago, one

one pound; coal-oil, one pint.

. In the preparation of this paint the abovcnamed ingredients arethoroughly mixedtogether and boiled for half an hour. It condi-v tionswill not admit of boiling, which renders the paint tire-proof,linseed-oil 'or any other suitable oil is used-in lieu of the coal-tar.in

the same proportion.

While I use practically the proportions above-named,1do not confinemyself exactly to them, as they may be varied according to lime, one andone-half pound; salt,

the condition of the material or the roof to which it is applied.

Having thus described my invention, What I claim, and desire to secureby Letters Patent, is-

1. In a paint, the combination of asuit-able vehicle for paints andafiller with plumbago, lime, salt, and coal-oil, combined insubstantially the proportions specified,

2. In a paint, the combination of coal-tar, yellow och er, plu mbago,lime, salt, andcoal o1l,

combined iirsuhstantially the proportions I In testimony that I claimthe foregoing as my own 1 have hereto affixed my signature n presence oftwo witnesses. I

NATHAN J. mire-HELL;

W itnesses: THOS. R. YOUNG, WILLIAM J. DICKSON.

